Upstream more leaf files in ios/web/web_state

ios/web/public/web_state/web_state_observer_bridge.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_BRIDGE_H_
 #define IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_BRIDGE_H_
 
 #import <Foundation/Foundation.h>
 
 #include <string>
@@ skipping 52 matching lines @@
 
 // Invoked by WebStateObserverBridge::FaviconUrlUpdated.
 - (void)webState:(web::WebState*)webState
     didUpdateFaviconURLCandidates:
         (const std::vector<web::FaviconURL>&)candidates;
 
 // Note: after |webStateDestroyed:| is invoked, the WebState being observed
 // is no longer valid.
 - (void)webStateDestroyed:(web::WebState*)webState;
 
+// Invoked by WebStateObserverBridge::DidStopLoading.
+- (void)webStateDidStopLoading:(web::WebState*)webState;
+
+// Invoked by WebStateObserverBridge::DidStartLoading.
+- (void)webStateDidStartLoading:(web::WebState*)webState;
+
 @end
 
 namespace web {
 
 class WebState;
 
 // Bridge to use an id<CRWWebStateObserver> as a web::WebStateObserver.
 // Will be added/removed as an observer of the underlying WebState during
 // construction/destruction. Instances should be owned by instances of the
 // class they're bridging.
@@ skipping 18 matching lines @@
                               const std::string& field_name,
                               const std::string& type,
                               const std::string& value,
                               int key_code,
                               bool input_missing) override;
   void AutocompleteRequested(const GURL& source_url,
                              const std::string& form_name,
                              bool user_initiated) override;
   void FaviconUrlUpdated(const std::vector<FaviconURL>& candidates) override;
   void WebStateDestroyed() override;
+  void DidStartLoading() override;
+  void DidStopLoading() override;
 
  private:
   base::WeakNSProtocol<id<CRWWebStateObserver>> observer_;
   DISALLOW_COPY_AND_ASSIGN(WebStateObserverBridge);
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_WEB_STATE_WEB_STATE_OBSERVER_BRIDGE_H_